Published: Jan. 1, 2024
Language: Английский
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160511 - 160511
Published: Feb. 1, 2025
Language: Английский
Citations
1
Advanced Science, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 28, 2024
Abstract Metal–organic frameworks (MOFs) and covalent–organic (COFs)‐based aerogels are garnering significant attention owing to their unique chemical structural properties. These materials harmoniously combine the advantages of MOFs COFs—such as high surface area, customizable porosity, varied functionality—with lightweight structured porosity characteristic aerogels. This combination opens up new avenues for advanced applications in fields where material efficiency enhanced functionality critical. review provides a comparative overview synthetic strategies utilized produce pristine MOF/COF well MOF/COF‐based hybrid aerogels, which functionalized with molecular precursors nanoscale materials. The versatility these positions them promising candidates addressing complex challenges environmental remediation, energy storage conversion, sustainable water‐energy technologies, separations. Furthermore, this study discusses current future prospects related synthesis techniques
Language: Английский
Citations
8
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(28), P. 37052 - 37062
Published: July 5, 2024
Covalent organic framework (COF) aerogels with functional groups offer exceptional processability and functionality for various applications. These hierarchical porous materials combine the advantages of COFs benefits aerogels, overcoming limitations conventional insoluble nonfusible COF powders. However, achieving both high crystallinity shape retention remains a challenge functionalized aerogels. In this work, we develop novel general solvent substitution method one-step synthesis formyl-functionalized without harsh vacuum conditions. exhibit excellent processing capabilities, superior mechanical strength, enhanced functionality. As proof-of-concept, they were used in adsorption lithium metal battery applications, significantly maximizing structural COFs, e.g.: (i) structure is fully wetted by electrolyte to form continuous transport channels; (ii) polar groups, which are easier be acquired, help desolvation transfer Li+; (iii) regular pore structures stabilize deposition Li+ inhibit growth dendrites. combined contribute lighter improved energy density safety.
Language: Английский
Citations
5
Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(17), P. 8330 - 8337
Published: Aug. 20, 2024
Covalent organic frameworks (COFs), an emerging class of crystalline porous materials, have garnered significant interest due to their low density, tunable chemical and physical properties, structure, high surface area. COFs typically exhibit microporosity, i.e., pores below 2 nm influenced by specific linkers binding patterns. In addition, some are reported small mesopores, especially when extended used. applications such as catalysis, where rapid mass transport is a crucial factor, hierarchical pore structures catalysts beneficial. This involves the presence micropores generate large area additional macropores facilitate reactants catalytic sites promote product diffusion. study describes application COF (macro-TpBpy) for photocatalysis. The macro-TpBpy architecture seamlessly integrates intrinsic microporosity with macropores, thereby yielding substantial increase in material demonstrates promising performance photocatalytic hydrogen evolution reaction, exhibiting rate 4.88 mmol g–1 h–1. Notably, this fourfold improvement compared analogue featuring only. Furthermore, introduction proved be beneficial production peroxide (H2O2). Specifically, exhibited 2716 μmol h–1, water without sacrificial hole scavengers, whereas pristine TpBpy had 2134 work thus contributes further development photocatalysis shows that, addition suitable band structure functionality, size substrate it must also considered important factors.
Language: Английский
Citations
5
ACS Nano, Journal Year: 2025, Volume and Issue: unknown
Published: March 11, 2025
Covalent organic frameworks (COFs) have shown promise as bifunctional catalysts to simultaneously mitigate shuttle effects and Li dendrite issues of lithium–sulfur (Li–S) batteries. However, the inherent low conductivity COFs has significantly limited their catalytic activity stability. Herein, durability COF/MXene heterostructure are activated by tuning surface curvatures interfaced with MXene. The increased curvature could induce enhanced electron delocalization alter geometry, which in turn strengthens lithium polysulfide adsorption, lowers energy barriers, stabilizes sites promote sulfur redox reactions. Concurrently, hierarchical structure improves electrolyte penetration wettability, facilitates rapid ion transport, homogenizes Li-ion flux distribution, thus achieving uniform deposition. Consequently, 1D-COF/MXene Li–S batteries demonstrate a high-rate capacity 926 mA h g–1 at 4C, stable cycling performance reversible 589 3C after 500 cycles, high 604 cm–2 loading 3.5 mg under electrolyte-to-sulfur ratio 10 μL mg–1. This work offers an efficacious approach regulate stability catalysts.
Language: Английский
Citations
0
Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 133159 - 133159
Published: April 1, 2025
Language: Английский
Citations
0
Carbon Energy, Journal Year: 2025, Volume and Issue: unknown
Published: April 1, 2025
ABSTRACT The urgent demand for renewable energy solutions, propelled by the global crisis and environmental concerns, has spurred creation of innovative materials solar thermal storage. Photothermal phase change (PTPCMs) represent a novel type composite material (PCM) aimed at improving storage efficiency incorporating photothermal into traditional PCMs encapsulating them within porous structures. Various encapsulation have been studied, including carbon, expanded graphite, ceramics, but issues like brittleness hinder their practical use. To overcome these limitations, flexible PTPCMs using organic polymers—like foams, hydrogels, wood—have emerged, offering high porosity lightweight characteristics. This review examines recent advancements in preparation based on polymer supports through techniques impregnation situ polymerization, assessing impact different PCM performance clarifying mechanisms conversion heat Subsequently, most applications polymer‐based are systematically summarized, future research challenges possible solutions discussed. aims to foster awareness about potential promoting environmentally friendly practices catalyzing further this promising field.
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 499, P. 155939 - 155939
Published: Sept. 19, 2024
Language: Английский
Citations
2
Small, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 12, 2024
Architecting hierarchical structures in monolithic covalent organic frameworks (COFs) is vital for the applications of COFs mass transport fields. The MXene-coated bilayer aerogels containing β-keto-enamine COF (MX-TpX-COF) with different chain lengths aromatic linkers are constructed study. directional freezing method endowed part and MXene coating aligned channels, small pores mainly exist former, while larger ones latter. occurrence multi-level inside bulks, together locally ordered vessels formed surfaces coating, conducive to aerogels. Accordingly, MX-TpX-COF showed attractive performance oil/water separation desalination, even can be used treating desalinating oil-contaminated seawater simultaneously. rate efficiency, however, strongly depended on hydrophilicity specific surface areas which easily tuned by tailoring linkers. This study offers a perspective utilization bulk materials marine governance, also proposes structural regulation way multi-functional integration COF-based
Language: Английский
Citations
1
Small Methods, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 10, 2024
Covalent organic frameworks (COFs) aerogels solve the restrictions on processability and application caused by insolubility non-fusibility of powders while avoiding inaccessibility pore structures dense stacking. At current start-up stage where COFs are scarce difficult to synthesize, design generalized synthetic methods play an indispensable role in guiding developing aerogels. Moreover, evolving functionality COF is equal vital, which achieves higher performance broader practical applications. In this work, for first time, processable BrCOFs have been synthesized without vacuum seven kind polar solvents, realizes general preparation It extremely friendly inapplicability some scenarios. Furthermore, Suzuki-Miyaura cross-coupling reaction, endows with cyano groups (-CN), trifluoromethyl (-CF
Language: Английский
Citations
0